Finding the Fourth Proportional to 1,362.88, 2,039.86 and 997.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.88 : 2,039.86 = 997.57 : x
2. Step 2: Convert to fraction form
   1,362.88/2,039.86 = 997.57/x
3. Step 3: Cross multiply
   1,362.88x = 2,039.86 × 997.57
4. Step 4: Simplify right side
   1,362.88x = 2,034,903.14
5. Step 5: Solve for x
   x = 2,034,903.14/1,362.88
6. Step 6: Final answer
   x = 1,493.09